Brandt was an ex-soldier in the United States Armed Forces, who lost her lower left arm. She became a candidate of the A.I.M.'s Extremis program, which could regrow her severed limb. She survived the process, which was a potentially fatal one if her body rejected it. She was then enlisted as an A.I.M. agent.
Brandt went to the city of Rose Hill to track down a document in the hands of Tony Stark (Iron Man). Brandt was virtually indestructible due to Extremis, but was killed by Stark when he rigged a gas line explosion, sending her onto power cables, which she did not recover from.
- Iron Man 3 (2013)